Burner.



J. J. KELLY.

BURNER.

APPLICATION FILED JULY 10,1909.

Patented May 4, 1909.

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JAMES J. KELLY, OF GRAFTON, PENNSYLVANIA.

BURNER.

To all whom tt lmay concern:

Be it known that I, JAMES J. KELLY, a citizen of the United States ofAmerica, residing at Grafton, in the county of Allegheny and StatePennsylvania, have invented certain new and useful Improvements inlurners, of which the following is a specilication,reference being hadtherein to the accompanying drawing.

'ihis invention relates to burners, and the primary object of tneinvention is to provide a novel burner, wherein positive and reliablemeans is employed for thoroughly mixing air and gas to produce a llameof considerble caloric intensity.

Another object of this invention is to provide a burner having anauxiliary air conduit which when considered in thermotics is of vitalimportance as an ellicient means for producing a perfect combustion anda thorough consumption of the products of combustion. y f

A further objectof the invention is to provide a simple and inexpensiveburner which will be positive in its action for producing anincandescent flame.

VWith the above and other objects in view which will more readily appearas the invention is better understood, the same consists in the novelconstruction, combination and arrangement of parts to be presentlydescribed and then specifically pointed out in the appended claims.

ln the drawings: Figure l is a longitudinal sectional view ot' a burnerconstructed in accordance with my invention, Fig. 2 is a view of thelarger or inlet end of the burner with the gas supply pipe removed. Fig.3 is a view in end elevation of the smaller or outlet end of the burner.lfig. et is a view in end elevation of the nozzle of the burner.

rl`o put my invention into practice, I provide a tapering outer casing lin which is a centrally arranged longitudinally extending gas inlet pipe2, and a. tapering inner casing 5, said inner casing surrounding thepipe 2, and providing in connection with said pipe, a main air inletconduit d, and in connection with the casing l, providing an auxiliaryair conduit 5.

The outer casing l, inner casing 8 and the gas inlet pipe 2 are spacedapart by radially disposed ribs t5, the ribs between the outer casing land the inner casing 3 extending from the rear end of the outer casing lto the inner end of the casing 3, while the ribs 6 be- Specication ofLetters Patent.

Application filed July l0, 1908.

Patented May 4, 1909.

Serial No. 442,812.

tween the pipe 2 and the inner casing 3 terminate at their outer ends atthe outer ends of said pipe 2 and casing 3, the inner ends of these ribsterminating at the inner end of the pipe 2.

rllhe forward ends of the casings l and 8 are cylindrical for twopurposes, first to accommodate a cylindrical flame shell 7 adapted tolit on the cylindrical end of the casing l, and secondly, to receive anozzle 8 threaded into the forward cylindrical end of the casing 3 as at9, said nozzle corresponding in diameter to the diameter of the forwardend of the casing 3. rlhe nozzle S has its inner walls tapered or flaredfor approximately its entire length as at l0, and is sub-divided by aspider or intersecting partitions ll. The rear end of the nozzle 8 iscontiguous to the forward end of the gas inlet pipe 2 and provides amixing chamber l2 between the confronting ends of those ribs 6 that liebetween the casing 3 and tube 2 and the parti tions 1l.

The rear end of the gas inlet pipe 2 is enlarged as at 13 and threadedinto this enlarged end as at 14: is a gas supply pipe 15.

A burner constructed in accordance with the invention as described canbe used within furnaces of various types with either natural gas orartificial gas as the fuel, and the operation thereof briefly is asfollows: Gas entering inlet pipe 2 through the supply pipe l5 isimmediately enveloped by air admitted through the main conduit 4, thegas or air eommingling in the chamber l2, and the mixture escapesthrough nozzle 8 into the llame shell T where it is ignited. For thepurpose of insuring a perfect combustion, I provide the auxiliary airconduit 5, thus admitting an additional supply of air to the flame shellat the point where the admixed gas and air-as it passes from thecombustion chamber l2 is ignited in the fiame shell.

would have it understood that the ele- 'ments herein illustrated anddescribed as air conduit, a tapering outer casing surj end of said innercasing projecting beyond rounding said inner casing and of greaterlength than the saine, ribs spacing said outer casing from the innercasing to provide an auxiliary air conduit, a nozzle mounted in thesinall end of said inner casing, a spider arranged in said nozzle, and aflame shell sleeved onto the inner end ot said outer casing.

2. A burner of the type described coinprising a gas inlet pipe, a gassupply pipe connected thereto, an inner taperingl casing surrounding thegas inlet pipe and xedly held in spaced relation thereto, said taperinginner casing having a cylindrical portion at its inner end projectingbeyond the inner end of the gas inlet pipe, a nozzle connected to thesaid cylindrical inner end of the inner casing, an outer taperinglcasing surrounding the inner tapering casing and held in fixed spacedrelation thereto, said outer casing having a cylindrical inner endprojecting beyond the inner end ot the inner casing, and a llame shellconnected With the cylindrical inner end of said outer casing.

A burner of the type described coinprising a gas inlet pipe, a gassupply pipe connected thereto, an inner tapering casing,l surroundingthe gas inlet pipe and fixedly held in spaced relation thereto, theinner the inner end of said gas inlet pipe, a nozzle connected to theinner end of said inner casini@r in advance of the inner end of the gasinlet pipe, an outer tapering casing surrounding the inner casing andheld in tiXed spaced relation thereto, the inner end of said outercasing projecting beyond the inner end of the inner casing, and a tiameshell connectedvto the inner end of Said outer casing.

et. A burner of the type described coinprising` a gas inlet pipe, a gassupply pipe connected thereto, an inner tapering casing 45 surrounding'the gas inlet pipe and lixedly held in spaced relation thereto, theinner end of said inner casing projecting beyond the inner end of thegas inlet pipe, an outer tapering' casi ig .surrounding the innercasing,- andheld in lixed spaced relation there- ,y

to, the inner end ot' said outer casing prejecting` beyond the inner endof the inner casing, and a nozzle secured in the inner end of the innercasina and projecting beyoiul the inner end of both casinge.

In testimony whereof I aiiix iny signa-

